A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 5935-01-037-2243
NSN 5920-01-393-4526
NSN 6135-00-078-9931
NSN 5910-00-385-1149
NSN 5945-01-528-4749
NSN 5985-00-394-5888
NSN 6610-01-342-9774
NSN 2925-01-101-4655
NSN 6685-00-671-9329
NSN 5835-01-644-8013
NSN 6220-00-176-0273
NSN 5895-01-247-3358